Towards Asphalt Mixture Morphology Evaluation with the Virtual Specimen Approach
2015 (English)In: International Journal on Road Materials and Pavement Design, ISSN 1468-0629, E-ISSN 2164-7402Article in journal (Refereed) Published
The morphology of asphalt mixture can be defined as a set of parameters describing the geo-metrical characteristics of its constituent materials, their relative proportions as well as spatialarrangement in the mixture. The present study is carried out to investigate the effect of themorphology on its meso- and macro-mechanical response. An analysis approach is used forthe meso-structural characterisation based on the X-ray computed tomography (CT) data.Image processing techniques are used to systematically vary the internal structure to obtaindifferent morphology structures. A morphology framework is used to characterise the aver-age mastic coating thickness around the main load carrying structure in the structures. Theuniaxial tension simulation shows that the mixtures with the lowest coating thickness exhibitbetter inter-particle interaction with more continuous load distribution chains between adja-cent aggregate particles, less stress concentrations and less strain localisation in the masticphase.
Place, publisher, year, edition, pages
Taylor & Francis, 2015.
IdentifiersURN: urn:nbn:se:kth:diva-164891DOI: 10.1080/14680629.2015.1098561ISI: 000379747600004ScopusID: 2-s2.0-84945206184OAI: oai:DiVA.org:kth-164891DiVA: diva2:806429
QC 201602042015-04-202015-04-202016-08-15Bibliographically approved